Astrid Task/Todo List: the de-facto task/todo manager for Android

This is a great app that is very powerful. I've looked through the different todo/task manager's out there, and this is by far the best. Though, it is still lacking in a few areas, namely it could use a bit of a shot when it comes to repeating events that happen on specific days of the month, like every first sunday, or third tuesday, but all in all a great app, that will remind you to get things done!